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LTC1421_15 PDF预览

LTC1421_15

更新时间: 2024-09-25 01:16:51
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 334K
描述
Hot Swap Controller

LTC1421_15 数据手册

 浏览型号LTC1421_15的Datasheet PDF文件第2页浏览型号LTC1421_15的Datasheet PDF文件第3页浏览型号LTC1421_15的Datasheet PDF文件第4页浏览型号LTC1421_15的Datasheet PDF文件第5页浏览型号LTC1421_15的Datasheet PDF文件第6页浏览型号LTC1421_15的Datasheet PDF文件第7页 
LTC1421/LTC1421-2.5  
Hot Swap Controller  
U
FEATURES  
DESCRIPTIO  
The LTC®1421/LTC1421-2.5 are Hot SwapTM controllers  
that allow a board to be safely inserted and removed from a  
live backplane. Using external N-channel pass transistors,  
the board supply voltages can be ramped up at a program-  
mable rate. Two high side switch drivers control the N-  
channel gates for supply voltages ranging from 3V to 12V.  
Allows Safe Board Insertion and Removal from a  
Live Backplane  
System Reset and Power Good Control Outputs  
Programmable Electronic Circuit Breaker  
User Programmable Supply Voltage Power-Up Rate  
High Side Driver for Two External N-Channels  
Controls Supply Voltages from 3V to 12V  
Aprogrammableelectroniccircuitbreakerprotectsagainst  
shorts. Warning signals indicate that the circuit breaker  
hastripped,apowerfailurehasoccurredorthattheswitch  
drivers are turned off. The reset output can be used to  
generate a system reset when the power cycles or a fault  
occurs. The two connect inputs can be used with stag-  
gered connector pins to indicate board insertion or re-  
moval. The power-on reset input can be used to cycle the  
board power or clear the circuit breaker.  
Connection Inputs Detect Board Insertion or Removal  
Undervoltage Lockout  
Power-On Reset Input  
U
APPLICATIO S  
Hot Board Insertion  
Electronic Circuit Breaker  
The trip point of the ground sense comparator is set at  
0.1V for LTC1421 and 2.5V for LTC1421-2.5.  
The LTC1421/LTC1421-2.5 are available in 24-pin SO and  
SSOP packages.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Hot Swap is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Q3  
1/2 Si4936DY  
V
EE  
12V  
1A  
C3  
R4  
20k  
5%  
C
C
LOAD  
0.47µF  
+
+
V
EE  
R2  
0.025Ω  
Q2  
1/2 Si4936DY  
2
V
DD  
1
12V  
1A  
V
DD  
3
4
R1  
0.005Ω  
Q1  
LOAD  
MTB50N06E  
V
5V  
5A  
CC  
1
2
V
CC  
10k  
16  
+
R6  
20k  
1%  
3
4
22  
C
LOAD  
C2  
23  
21  
20  
19  
18  
17  
D1  
0.1µF  
R5  
16k  
5%  
V
SETLO GATELO V  
V
SETHI GATEHI V  
CCLO  
OUTLO CCHI  
OUTHI  
10  
9
14  
13  
8
11  
15  
6
RAMP  
R3  
1k  
2
24  
CON2  
AUXV  
CPON  
COMP  
COMP  
CC  
R7  
7.15k  
1%  
C1  
1µF  
1µF  
+
LTC1421  
REF  
FB  
COMPOUT  
PWRGD  
RESET  
4
µP  
FAULT  
POR  
FAULT  
I/O  
I/O  
RESET  
3
1
POR  
7
CON1  
GND  
12  
DISABLE  
5
1
13  
12  
GND  
BEA  
BEB  
GND  
V
CC  
DATA BUS  
DATA  
BUS  
1421 TA01  
QS3384  
QuickSwitch®  
QuickSwitch IS A REGISTERED TRADEMARK  
OF QUALITY SEMICONDUCTOR CORPORATION.  
BACKPLANE  
PC BOARD  
1

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